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Vulnerability details: VCID-a15m-bcma-vfa7
Vulnerability ID VCID-a15m-bcma-vfa7
Aliases CVE-2008-3656
GHSA-823x-6r7f-v9x6
Summary Multiple vulnerabilities have been discovered in Ruby that allow for attacks including arbitrary code execution and Denial of Service.
Status Published
Exploitability 2.0
Weighted Severity 7.0
Risk 10.0
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-399 Resource Management Errors
System Score Found at
epss 0.65085 https://api.first.org/data/v1/epss?cve=CVE-2008-3656
epss 0.68786 https://api.first.org/data/v1/epss?cve=CVE-2008-3656
epss 0.68786 https://api.first.org/data/v1/epss?cve=CVE-2008-3656
epss 0.68786 https://api.first.org/data/v1/epss?cve=CVE-2008-3656
epss 0.68786 https://api.first.org/data/v1/epss?cve=CVE-2008-3656
epss 0.68786 https://api.first.org/data/v1/epss?cve=CVE-2008-3656
epss 0.68786 https://api.first.org/data/v1/epss?cve=CVE-2008-3656
epss 0.68786 https://api.first.org/data/v1/epss?cve=CVE-2008-3656
epss 0.68786 https://api.first.org/data/v1/epss?cve=CVE-2008-3656
epss 0.68786 https://api.first.org/data/v1/epss?cve=CVE-2008-3656
cvssv2 7.8 https://nvd.nist.gov/vuln/detail/CVE-2008-3656
Reference id Reference type URL
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=494401
http://lists.apple.com/archives/security-announce/2009/May/msg00002.html
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2008-3656.json
https://api.first.org/data/v1/epss?cve=CVE-2008-3656
http://secunia.com/advisories/31430
http://secunia.com/advisories/31697
http://secunia.com/advisories/32165
http://secunia.com/advisories/32219
http://secunia.com/advisories/32255
http://secunia.com/advisories/32256
http://secunia.com/advisories/32371
http://secunia.com/advisories/33178
http://secunia.com/advisories/35074
http://security.gentoo.org/glsa/glsa-200812-17.xml
https://exchange.xforce.ibmcloud.com/vulnerabilities/44371
https://nvd.nist.gov/vuln/detail/CVE-2008-3656
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9682
http://support.apple.com/kb/HT3549
http://support.avaya.com/elmodocs2/security/ASA-2008-424.htm
https://www.redhat.com/archives/fedora-package-announce/2008-October/msg00259.html
https://www.redhat.com/archives/fedora-package-announce/2008-October/msg00299.html
http://wiki.rpath.com/wiki/Advisories:rPSA-2008-0264
http://www.debian.org/security/2008/dsa-1651
http://www.debian.org/security/2008/dsa-1652
http://www.redhat.com/support/errata/RHSA-2008-0897.html
http://www.ruby-lang.org/en/news/2008/08/08/multiple-vulnerabilities-in-ruby/
http://www.securityfocus.com/archive/1/495884/100/0/threaded
http://www.securityfocus.com/bid/30644
http://www.securitytracker.com/id?1020654
http://www.us-cert.gov/cas/techalerts/TA09-133A.html
http://www.vupen.com/english/advisories/2008/2334
http://www.vupen.com/english/advisories/2009/1297
458953 https://bugzilla.redhat.com/show_bug.cgi?id=458953
cpe:2.3:a:ruby-lang:ruby:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:ruby-lang:ruby:*:*:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.6.8:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:ruby-lang:ruby:1.6.8:*:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.8.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:ruby-lang:ruby:1.8.0:*:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.8.1:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:ruby-lang:ruby:1.8.1:*:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.8.1:-9:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:ruby-lang:ruby:1.8.1:-9:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.8.2:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:ruby-lang:ruby:1.8.2:*:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.8.2:preview2:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:ruby-lang:ruby:1.8.2:preview2:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.8.2:preview3:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:ruby-lang:ruby:1.8.2:preview3:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.8.2:preview4:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:ruby-lang:ruby:1.8.2:preview4:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.8.3:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:ruby-lang:ruby:1.8.3:*:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.8.3:preview1:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:ruby-lang:ruby:1.8.3:preview1:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.8.3:preview2:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:ruby-lang:ruby:1.8.3:preview2:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.8.3:preview3:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:ruby-lang:ruby:1.8.3:preview3:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.8.4:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:ruby-lang:ruby:1.8.4:*:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.8.4:preview1:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:ruby-lang:ruby:1.8.4:preview1:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.8.4:preview2:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:ruby-lang:ruby:1.8.4:preview2:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.8.4:preview3:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:ruby-lang:ruby:1.8.4:preview3:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.8.5:p11:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:ruby-lang:ruby:1.8.5:p11:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.8.5:p113:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:ruby-lang:ruby:1.8.5:p113:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.8.5:p115:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:ruby-lang:ruby:1.8.5:p115:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.8.5:p12:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:ruby-lang:ruby:1.8.5:p12:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.8.5:p2:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:ruby-lang:ruby:1.8.5:p2:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.8.5:p35:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:ruby-lang:ruby:1.8.5:p35:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.8.5:preview1:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:ruby-lang:ruby:1.8.5:preview1:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.8.5:preview2:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:ruby-lang:ruby:1.8.5:preview2:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.8.5:preview3:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:ruby-lang:ruby:1.8.5:preview3:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.8.5:preview4:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:ruby-lang:ruby:1.8.5:preview4:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.8.5:preview5:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:ruby-lang:ruby:1.8.5:preview5:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.8.6:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:ruby-lang:ruby:1.8.6:*:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.8.6:p110:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:ruby-lang:ruby:1.8.6:p110:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.8.6:p114:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:ruby-lang:ruby:1.8.6:p114:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.8.6:preview1:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:ruby-lang:ruby:1.8.6:preview1:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.8.6:preview2:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:ruby-lang:ruby:1.8.6:preview2:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.8.6:preview3:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:ruby-lang:ruby:1.8.6:preview3:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.8.7:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:ruby-lang:ruby:1.8.7:*:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.8.7:p17:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:ruby-lang:ruby:1.8.7:p17:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.8.7:p22:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:ruby-lang:ruby:1.8.7:p22:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.8.7:p71:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:ruby-lang:ruby:1.8.7:p71:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.8.7:preview1:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:ruby-lang:ruby:1.8.7:preview1:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.8.7:preview2:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:ruby-lang:ruby:1.8.7:preview2:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.8.7:preview3:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:ruby-lang:ruby:1.8.7:preview3:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.8.7:preview4:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:ruby-lang:ruby:1.8.7:preview4:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.9.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:ruby-lang:ruby:1.9.0:*:*:*:*:*:*:*
CVE-2008-3657;OSVDB-47472;CVE-2008-3655;OSVDB-47470 Exploit https://www.securityfocus.com/bid/30644/info
CVE-2008-4310;OSVDB-47471;CVE-2008-3656 Exploit https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/multiple/dos/32222.rb
GLSA-200812-17 https://security.gentoo.org/glsa/200812-17
RHSA-2008:0897 https://access.redhat.com/errata/RHSA-2008:0897
USN-651-1 https://usn.ubuntu.com/651-1/
Data source Exploit-DB
Date added Aug. 11, 2008
Description Ruby 1.9 - 'WEBrick::HTTP::DefaultFileHandler' Crafted HTTP Request Denial of Service
Ransomware campaign use Known
Source publication date Aug. 11, 2008
Exploit type dos
Platform multiple
Source update date Dec. 21, 2016
Source URL https://www.securityfocus.com/bid/30644/info
Data source Metasploit
Description The WEBrick::HTTP::DefaultFileHandler in WEBrick in Ruby 1.8.5 and earlier, 1.8.6 to 1.8.6-p286, 1.8.7 to 1.8.7-p71, and 1.9 to r18423 allows for a DoS (CPU consumption) via a crafted HTTP request.
Note 
Stability:
  - crash-service-down
SideEffects: []
Reliability: []
Ransomware campaign use Unknown
Source publication date Aug. 8, 2008
Source URL https://github.com/rapid7/metasploit-framework/tree/master/modules/auxiliary/dos/http/webrick_regex.rb
Vector: AV:N/AC:L/Au:N/C:N/I:N/A:C Found at https://nvd.nist.gov/vuln/detail/CVE-2008-3656
Exploitability (E) Access Vector (AV) Access Complexity (AC) Authentication (Au) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

high

functional

unproven

proof_of_concept

not_defined

local

adjacent_network

network

high

medium

low

multiple

single

none

none

partial

complete

none

partial

complete

none

partial

complete
Exploit Prediction Scoring System (EPSS)
Percentile 0.98483
EPSS Score 0.65085
Published At April 16, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-04-01T13:01:36.978538+00:00 Gentoo Importer Import https://security.gentoo.org/glsa/200812-17 38.0.0